Vulnerability Details : CVE-2017-15127
A flaw was found in the hugetlb_mcopy_atomic_pte function in mm/hugetlb.c in the Linux kernel before 4.13. A superfluous implicit page unlock for VM_SHARED hugetlbfs mapping could trigger a local denial of service (BUG).
Vulnerability category: Denial of service
Products affected by CVE-2017-15127
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-15127
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-15127
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2017-15127
-
The product does not clean up its state or incorrectly cleans up its state when an exception is thrown, leading to unexpected state or control flow.Assigned by: secalert@redhat.com (Primary)
References for CVE-2017-15127
-
https://access.redhat.com/security/cve/CVE-2017-15127
CVE-2017-15127 - Red Hat Customer PortalThird Party Advisory
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https://github.com/torvalds/linux/commit/5af10dfd0afc559bb4b0f7e3e8227a1578333995
userfaultfd: hugetlbfs: remove superfluous page unlock in VM_SHARED case · torvalds/linux@5af10df · GitHubPatch;Third Party Advisory
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https://access.redhat.com/errata/RHSA-2018:0676
RHSA-2018:0676 - Security Advisory - Red Hat Customer Portal
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http://www.securityfocus.com/bid/102517
Linux Kernel 'mm/hugetlb.c' Local Denial of Service Vulnerability
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https://access.redhat.com/errata/RHSA-2018:1062
RHSA-2018:1062 - Security Advisory - Red Hat Customer Portal
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http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5af10dfd0afc559bb4b0f7e3e8227a1578333995
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=1525218
1525218 – (CVE-2017-15127) CVE-2017-15127 kernel: Improper error handling of VM_SHARED hugetlbfs mapping in mm/hugetlb.cIssue Tracking;Third Party Advisory
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